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WithersRavenel
Our People. Your Success.
115 MacKenan Drive | Cary, NC 27511
t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F‐1479
Asheville | Cary | Greensboro | Pittsboro | Raleigh | Southern Pines | Wilmington | Charlotte | Lumberton
GROUNDWATER MONITORING REPORT
Pace Oil – George Snyder Estate #2
NCDEQ Incident #23446
UST # WS‐6239
2495 Hickory Tree Road
Winston‐Salem, Davidson County, North Carolina
WithersRavenel Project No. 23‐0307‐DL
Prepared for:
State of North Carolina
Department of Environmental Quality
Division of Waste Management
Underground Storage Tank Section
Federal & State Lead Program
1646 Mail Service Center
Raleigh, North Carolina 27699‐1646
Prepared by:
WithersRavenel
115 MacKenan Drive
Cary, North Carolina 27511
North Carolina Firm License No. F‐1479
July 10, 2023
.
WithersRavenel
Our People. Your Success.
115 MacKenan Drive | Cary, NC 27511
t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F‐1479
Asheville | Cary | Greensboro | Pittsboro | Raleigh | Southern Pines | Wilmington | Charlotte | Lumberton
July 10, 2023
State of North Carolina
Department of Environmental Quality
Federal & State Lead Program
Division of Waste Management‐Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699‐1646
Attn: Ms. Liz Price
Re: Groundwater Monitoring Report
Pace Oil – George Snyder Estate #2
2495 Hickory Tree Road
Winston‐Salem, Davidson County, North Carolina
Groundwater Incident Number: 23446
UST Number: WS‐6239
WR Project Number: 23‐0307‐DL
Ms. Price:
WithersRavenel, Inc. (WR) has completed this Groundwater Monitoring Report to document
groundwater sampling activities completed at the facility in association with our proposal,
numbered TA‐01, for the above referenced site, approved by the Federal & State Lead Program
on April 14, 2023. The enclosed report summarizes the results of the recently completed
monitoring activities.
WR appreciates the opportunity to be of service to the Federal & State Lead Program. Should you
have any questions regarding the attached, please contact us at (919) 469‐3340.
Cordially,
WithersRavenel
Cory B. Nobles, P.G. Elizabeth A. Allyn, P.G.
Environmental Geologist II Environmental Project Geologist II
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. 23446 WR Project # 23‐0307‐DL
Groundwater Monitoring Report July 2023
i
TABLE OF CONTENTS
SECTION A: SITE INFORMATION ..................................................................................................................... 1
SECTION B. EXECUTIVE SUMMARY ................................................................................................................ 3
SECTION C. SITE HISTORY AND CHARACTERIZATION ........................................................................... 5
SECTION D. GROUNDWATER SAMPLING – MAY 2023 ........................................................................... 7
SECTION E. CONCLUSIONS AND RECOMMENDATIONS ........................................................................ 8
FIGURES
Figure 1 General Location Map
Figure 2 Site Map
Figure 3 Receptor Map
Figure 4 Adjacent Properties Map
Figure 5 Groundwater Analytical Results Map – May 2023
TABLES
Table B‐1 Site History: UST/AST System & Other Release Information
Table B‐4 Summary of Groundwater Analytical Results
Table B‐4A Summary of Historical Groundwater Analytical Results
Table B‐5C Adjacent Property Information
Table B‐7 Monitoring Well Construction and Groundwater Elevation Information
APPENDICES
Appendix A Field Notes and Photographic Record
Appendix B Laboratory Analytical Report and Chain‐of‐Custody
Appendix C General Standard Operating Procedures
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. 23446 WR Project # 23‐0307‐DL
Groundwater Monitoring Report July 2023
1
SECTION A: SITE INFORMATION
1. Site Identification
Date of Report: July 10, 2023
Facility I.D.: 00‐0‐0000012427
Incident No.: 23446
UST No.: WS‐6239
Site Risk: Intermediate
Site Rank: I0080R
Land Use Category: Residential
Site Name: Pace Oil – George Snyder Estate #2
Site Location: 2495 Hickory Tree Road
Nearest City/Town: Winston‐Salem
County: Davidson
Description of Geographical Data Point: Center of Source Area
Location Method: Google Earth™
Latitude: 35.991308°
Longitude: 80.252457°
2. Contact Information
UST Operator: Pace Oil Company
Address: 150 Stratford Court SW, Winston‐Salem, NC 27103
Phone: 336‐723‐9982
Property Owner: Carolyn S. Thomas
Address: 352 James Road, Clemmons, NC 27012
Phone: Unknown
Property Occupant: None – Undeveloped
Address: n/a
Phone: n/a
Consultant/Contractor: WithersRavenel
Address: 115 MacKenan Drive, Cary, NC 27511
Phone: 919‐469‐3340
Analytical Laboratory: Waypoint Analytical, LLC
State Certification Number: ENV402
Address: 449 Springbrook Rd., Charlotte, NC 28217
Phone: 704‐529‐6364
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. 23446 WR Project # 23‐0307‐DL
Groundwater Monitoring Report July 2023
3
SECTION B. EXECUTIVE SUMMARY
1. Summary of Activities Associated with Current TA
WithersRavenel, Inc. (WR) conducted a groundwater sampling event at the Pace Oil – George
Snyder Estate #2 site located at 2495 Hickory Tree Road in Winston‐Salem, Davidson County,
North Carolina in association with TA‐01 under NCDEQ Contract #N70522‐C. The scope of work
for this project included sampling the four existing monitoring wells (MW‐1R, MW‐2, MW‐ 3, and
MW‐4); however, MW‐2 was not located and therefore not sampled. Furthermore, an updated
receptor survey was conducted within a 1,000‐foot radius of the property. Lastly, three
Provectus® Oxygen Releasing Substrate (ORS™) sleeves were inserted into the water column of
MW‐1R.
2. Soil, Groundwater and LNAPL Assessment Information
Soils
No soil samples were obtained in association with the monitoring activities conducted by WR
during the May 2023 event. Based on historical information for the site, during the removal of the
two 3,000‐gallon gasoline, and one 2,000‐gallon gasoline USTs, soil samples collected post‐
closure indicated gasoline range total petroleum hydrocarbon (TPH‐GRO) concentrations from 51
to 79 mg/kg at the two dispensers, 3,920 mg/kg TPH‐GRO at the westernmost product piping,
and 2,900 mg/kg TPH‐GRO at the southern end of Tank #1. In 2010, Progress Environmental Inc.
(Progress) conducted risk‐based soil sampling by advancing two soil borings in the vicinity of the
former USTs. The soil samples indicated exceedances of the Soil‐to‐Groundwater Maximum Soil
Contaminant Concentrations (MSCCs) in the samples collected from SB‐1 at depths of 15 and 25
feet below ground surface (bgs) and from SB‐2 at 25 and 30 feet bgs. The depth to water in the
monitoring wells in close proximity to the soil borings (MW‐1 and MW‐5) have historical depths‐
to‐water ranging from 22.04 to 38.82 feet bgs indicating that three of the soil samples were likely
collected beneath the seasonal high‐water table. Concentrations did not exceed the Residential
MSCCs.
Groundwater
WR collected groundwater samples from site monitoring wells MW‐1R, MW‐3, and MW‐4 on May
2, 2023. The collected groundwater samples were submitted for laboratory analysis of volatile
organic compounds (VOCs) by SM6200B.
Laboratory analytical results revealed the following:
MW‐1R exhibited concentrations exceeding the North Carolina Groundwater Quality
Standards (NC 2L Standards) for several other compounds.
No VOCs were detected above laboratory method detection limits in monitoring wells
MW‐3, MW‐4, or the field blank.
Light Non‐Aqueous Phase Liquid
Light non‐aqueous phase liquid (LNAPL) has not historically been detected in the monitoring wells
associated with the site.
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. 23446 WR Project # 23‐0307‐DL
Groundwater Monitoring Report July 2023
4
3. Receptor Information
WR conducted an updated receptor survey on May 2, 2023 within 1,000 feet of the source area.
No active water supply wells were observed. Davidson County Water, supplier of municipal water
in the area, was contacted regarding water connections for properties within 1,000 feet of the
source area. Hidden Creek and Merrifield subdivisions to the northeast and southwest of the site,
respectively, are both connected to municipal water. Four properties were identified within 1,000
feet of the source area that are not within these subdivisions. Three of the four properties were
connected to Davidson County Water. The property located at 139 Essick Lane is the only
property not connected to municipal water nor is there record of a previous connection for that
address. No water supply well was observed at 139 Essick Lane during the updated receptor
survey, during previous receptor surveys, or in historical aerial photographs. The property
addressed as 139 Essick Lane did not appear to be occupied during the May 2023 site activities
and is located approximately 900 feet upgradient of the source area.
The USGS Topographic Map, Winston‐Salem West, NC Quadrangle (Figure 1), indicates surface
water in the area of the site flows toward an intermittent tributary approximately 1,800 feet south
of the site. This tributary flows toward Miller Creek, approximately 2,700 feet south of the site.
4. Remediation Activities
Based on WR’s review of historical files available for the site, the following remedial activities have
been completed at the location:
Progress completed an initial Mobile Multi‐Phase Extraction (MMPE) event in August 2010.
This event recovered 8,296 gallons of petroleum‐impacted groundwater and 27.064 gallons
of petroleum product as vapor.
Progress completed a second MMPE event in October 2010. This event recovered 8,374
gallons of petroleum‐impacted groundwater and 20.796 gallons of petroleum product as
vapor.
In December 2010, 927.95 tons of petroleum impacted soil was reportedly removed and
450 pounds of Klozur® sodium persulfate was placed in the base of excavation at the
approximate depth of the saturated zone.
In May 2023, WR placed three ORS sleeves in monitoring well MW‐1R to aid in natural
attenuation.
5. Recommendations
Based on the results of assessment and monitoring activities conducted at the site in association
with this TA, WR recommends the following:
Brush clearing site for ease of well locating and sampling.
Begin quarterly sampling of MW‐1R for possible site closure.
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. 23446 WR Project # 23‐0307‐DL
Groundwater Monitoring Report July 2023
5
SECTION C. SITE HISTORY AND CHARACTERIZATION
The following information summarizes the site history and characterization.
1. UST Information
According to the UST Facility database, the site was identified as Facility #00‐0‐0000012427 and
operated three USTs including one 2,000‐gallon UST (UST‐1) and two 3,000‐gallon gasoline USTs
(UST‐2 and UST‐3).
No ASTs were known to have been present at the site. Historical UST information is provided in
Table B‐1.
2. Description of Release/General Assessment History
The following summary of the assessment history is based on WR’s review of historical files for
the subject incident:
In April 1999, one 2,000‐gallon gasoline and two 3,000‐gallon gasoline USTs were removed
from the site. The three onsite USTs were closed by removal in November 2005.
Approximately 151.59 tons of impacted soil were removed. Soil samples collected post‐
excavation indicated exceedances of TPH‐GRO Action Levels at the product piping and
beneath UST‐1. No soil over‐excavation was performed. The soils excavated during UST
system closure were returned to the UST excavation areas.
• In July 2002, a Phase II Limited Site Assessment (LSA) identified three inactive water supply
wells within 1,000 feet of the site. Two of these supply wells were located on the parcel to
the southwest of the site, which are likely no longer present, as this parcel was subsequently
subdivided and redeveloped. The third well was located at 2387 Hickory Tree Road. This
property was confirmed to be connected to the municipal water supply during the May 2023
receptor survey update. Municipal water was identified as being present within the 1,000‐ ft
search radius. As part of the LSA, five monitoring wells were installed and sampled.
Groundwater samples collected from these monitoring wells contained several compound
concentrations exceeding the 2L Standards. The concentration of EDB in MW‐1 was the
only compound detected above its GCL.
• In January 2003, a Pre‐CAP monitoring event was performed. MW‐1 was found to be
destroyed and could not be sampled. Groundwater samples were collected from MW‐2
through MW‐5. Several compounds were detected above 2L Standards, but no
concentrations exceeded the GCLs.
• In July 2010, additional assessment was performed at the site, including the advancement of
soil boring for soil analysis, and the installation of two monitoring wells. Concentrations of
petroleum‐related compounds were detected above Soil‐to‐Groundwater MSCCs.
Laboratory results of samples collected from MW‐1 and MW‐5 detected concentrations of
compounds above GCLs.
A MMPE event was conducted in August 2010 on MW‐1 and MW‐5. Subsequent sampling
detected several compounds above 2L Standards within these two wells, with only EDB
reported above its GCL in both wells. Progress Environmental reported significant decreases
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. 23446 WR Project # 23‐0307‐DL
Groundwater Monitoring Report July 2023
6
following the MMPE event. A second MMPE event was conducted at the site in October
2010. Upon completion of sampling, EDB was found to remain above its GCL after the
second MMPE event.
In January 2011, approximately 927.95 tons of contaminated soil was excavated in the
vicinity of the former UST system. These soils were disposed of off‐site and the excavation
was backfilled using imported soil. Sidewall confirmation soil samples were analyzed and
found to contain several target compounds above Soil‐to‐Groundwater MSCC levels.
Between February 2011 and February 2013, monitoring wells were installed and sampled to
delineate the groundwater contamination at the site. During these sampling events, EDB
remained above its GCL at MW‐1R. Several other compounds remained present in the
monitoring wells at concentrations above 2L Standards.
In June 2021, WR conducted a groundwater sampling event collecting samples from MW‐
1R through MW‐4. MW‐1R contained 1,2‐dibromoethane at a concentration exceeding the
GCLs and several other petroleum compounds exceeding the 2L Standards. MW‐2, MW‐3,
and MW‐4 did not exhibit concentrations exceeding the laboratory detection limits.
3. Site Characteristics
The property is located in a rural residential and agricultural area of Winston‐Salem, Davidson
County, North Carolina (Figure 1). The property is currently undeveloped and heavily overgrown.
The Davidson County Geographic Information System (GIS) website identifies the subject property
as parcel identification number 6821‐02‐97‐5925. The parcel is approximately 1.49‐acres in size.
Adjacent property ownership information is summarized in Table B‐5C.
4. Information on Receptors/Potential Receptors
WR conducted an updated receptor survey on May 2, 2023 within 1,000 feet of the source area.
No active water supply wells were observed. Davidson County Water, supplier of municipal water
in the area, was contacted regarding water connections for properties within 1,000 feet of the
source area. Hidden Creek and Merrifield subdivisions to the northeast and southwest of the site,
respectively, are both connected to municipal water. Four properties were identified within 1,000
feet of the source area that are not within these subdivisions. Three of the four properties were
connected to Davidson County Water. The property located at 139 Essick Lane is the only
property not connected to municipal water nor is there record of a previous connection for that
address. No water supply well was observed at 139 Essick Lane during the updated receptor
survey, during previous receptor surveys, or in historical aerial photographs. The property
addressed as 139 Essick Lane did not appear to be occupied during the May 2023 site activities
and is located approximately 900 feet upgradient of the source area. Information regarding 139
Essick Lane is included on Table B‐5A.
The USGS Topographic Map, Winston‐Salem West, NC Quadrangle (Figure 1), indicates surface
water in the area of the site flows toward an intermittent tributary approximately 1,800 feet south
of the site. This tributary flows toward Miller Creek, approximately 2,700 feet south of the site. A
potential receptor map is included as Figure 3.
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. 23446 WR Project # 23‐0307‐DL
Groundwater Monitoring Report July 2023
7
5. Regional and Site Geology and Hydrology
The Geologic Map of North Carolina depicts the site is located in the Charlotte Belt of the
Piedmont Physiographic Province and consists of Late Proterozoic to Cambrian aged
metamorphosed granitic bedrock.
According to the United States Department of Agricultural (USDA) Natural Resources
Conservation Service (NRCS) Web Soil Survey, the source area is underlain by Pacolet sandy loam
(18 to 25 percent slopes). Pacolet sandy loam is well drained, found on hillslopes on ridges, and
the parent material is saprolite derived from granite and gneiss and/or schist. Boring log records
for monitoring wells MW‐1 through MW‐5 (Paragon, June 2002) indicated soils beneath the site
are predominantly clayey silt. Bedrock was not encountered in these borings; however, partially
weathered rock was reported beginning at 40 feet bgs.
SECTION D. GROUNDWATER SAMPLING – MAY 2023
On May 2, 2023, WR personnel mobilized to the subject property to perform groundwater
sampling activities at the facility in association with TA‐01 under NCDEQ Contract # N70522‐C.
The scope of work for this project included the gauging, purging, and sampling of monitoring wells
MW‐1R through MW‐4. However, MW‐2 could not be located and was therefore not sampled.
The following paragraphs describe the sampling activities and associated laboratory analytical
results.
Groundwater Sampling Activities
Prior to the purging and sampling of site monitoring wells as described below, WR personnel
gauged the wells with an electronic oil‐water interface meter to determine the depth to LNAPL
and groundwater at each well location. During the performance of these activities, LNAPL was not
identified in the monitoring wells.
The depth to groundwater measurements in the monitoring wells across the site ranged from
24.78 feet below the top of casing (ft‐BTOC) in monitoring well MW‐4 to 26.28 ft‐BTOC in
monitoring well MW‐3 in May 2023. Only two shallow monitoring wells were gauged, therefore a
groundwater elevation contour map could not be generated. Historically, the direction of
groundwater flow is generally towards the south. Groundwater flow as determined based on these
measurements is shown on Figure 3. Groundwater elevation measurements for this event are
presented in Table B‐7. Field notes are included in Appendix A.
Following gauging, the monitoring wells were purged and sampled using separate, dedicated
polyethylene (PE) bailers for each well. Samples from the wells were decanted into pre‐preserved
laboratory provided sample containers. Samples collected from site monitoring wells were
submitted to Waypoint Analytical, LLC for testing by Standard Method (SM) 6200B. Once
sampling was completed three (3) ORS sleeves were cable tied to MW‐1R’s well plug and
submerged into the water column of MW‐1R to help aid in natural attenuation.
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. 23446 WR Project # 23‐0307‐DL
Groundwater Monitoring Report July 2023
8
Laboratory Results
Analytical results for groundwater samples obtained from site monitoring wells on May 2, 2023,
indicated the following:
Monitoring well MW‐1R contained several petroleum compounds exceeding
the 2L Standards.
Monitoring wells MW‐3 and MW‐4 did not exhibit concentrations exceeding
the laboratory detection limits.
Groundwater analytical results are summarized in Table B‐4 and shown on Figure 4. Historical
groundwater analytical results are summarized in Table B‐4A. Copies of the laboratory analytical
report and chain‐of‐custody are included in Appendix B. WR’s generalized standard operating
procedures are provided in Appendix C.
SECTION E. CONCLUSIONS AND RECOMMENDATIONS
This report documents the results of field activities conducted at the site for TA‐01, which included
gauging, purging, and sampling monitoring wells MW‐1R, MW‐3, and MW‐4.
Conclusions based on observations, analytical data and research relating to the release at the site
combined with historical information include the following:
The soil remedial goals for the site are the Residential MSCCs. Soil samples collected to date
have been below the Residential MSCCs.
The groundwater remedial goals are the GCLs. Current groundwater concentrations did not
exceed the GCLs in any of the sampled monitoring wells.
The site is currently undeveloped and heavily overgrown.
No active or inactive water supply wells were located within a 1,000‐foot radius of the
property.
Based on the results of assessment and monitoring activities conducted at the site in association
with this TA, WR recommends the following:
Brush clearing site for ease of well locating and sampling.
Begin quarterly sampling of MW‐1R for possible site closure.
WithersRavenel
Our People. Your Success.
FIGURES
KBB
EAA
DRAWN BY:
05/24/2023 23-0307-DL
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SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
PACE OIL- GEORGE SNYDER ESTATE #2NCDEQ INCIDENT 234462495 HICKORY TREE ROADWINSTON-SALEM, DAVIDSON COUNTY, NC
GENERAL LOCATION MAP
1"=500 '
GRAPHIC SCALE
1 inch = 500 ft.
0 500250 1000
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.com
SUBJECT SITE
± 1.49 ACRES
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DMW-4MW-2MW-3MW-5MW-1R123FORMER DISPENSERFORMERPIPINGAPPROXIMATE EXTENTOF EXCAVATIONKBBEAADRAWN BY:05/24/202323-0307-DL2SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:PACE OIL- GEORGE SNYDER ESTATE #2NCDEQ INCIDENT 234462495 HICKORY TREE ROADWINSTON-SALEM, DAVIDSON COUNTY, NCSITE MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com1"=50 'GRAPHIC SCALE1 inch = 50 ft.05025100J:\23\0307-DL-Pace Oi
lGeorge Snyder\Enviro\CAD\TF23446 BASE 05-24-2023.dwg- June 9, 2023 -
LALLYNLEGENDTYPE II MONITORING WELL LOCATIONTYPE III MONITORING WELL LOCATION(ABANDONED)NOTES: 1.) 2022 AERIAL OBTAINED FROM NC ONE MAP.
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WSW KBBEAADRAWN BY:05/24/202323-0307-DL3SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:RECEPTOR MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comJ:\23\0307-DL-Pace OilGeorge Snyder\Enviro\CAD\TF23446 BASE 05-24-2023.dwg- July 10, 2023 - LALLYN1"=200 'GRAPHIC SCALE
1 inch = 200 ft.
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NOTES:
1.) 2022 AERIAL OBTAINED FROM NC ONE MAP.PACE OIL- GEORGE SNYDER ESTATE #2NCDEQ INCIDENT 234462495 HICKORY TREE ROADWINSTON-SALEM, DAVIDSON COUNTY, NC
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DMW-4MW-2MW-3MW-5MW-1R123FORMER DISPENSERFORMERPIPINGAPPROXIMATE EXTENTOF EXCAVATION123456SITE1"=60 'GRAPHIC SCALE1 inch = 60 ft.06030120KBBEAADRAWN BY:05/24/202323-0307-DL4SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:PACE OIL- GEORGE SNYDER ESTATE #2NCDEQ INCIDENT 234462495 HICKORY TREE ROADWINSTON-SALEM, DAVIDSON COUNTY, NCADJACENT PROPERTIESMAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.comJ:\23\0307-DL-Pace Oi
lGeorge Snyder\Enviro\CAD\TF23446 BASE 05-24-2023.dwg- June 9, 2023 -
LALLYNLEGENDTYPE II MONITORING WELL LOCATIONTYPE III MONITORING WELL LOCATION(ABANDONED)NOTES: 1.) 2022 AERIAL OBTAINED FROM NC ONE MAP. 2.) ADJACENT PROPERTIES ON TABLE B-5C
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DMW-4MW-2MW-3MW-5MW-1R123FORMER DISPENSERFORMERPIPINGAPPROXIMATE EXTENTOF EXCAVATION1"=50 'GRAPHIC SCALE1 inch = 50 ft.05025100KBBEAADRAWN BY:05/24/202323-0307-DL5SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:PACE OIL- GEORGE SNYDER ESTATE #2NCDEQ INCIDENT 234462495 HICKORY TREE ROADWINSTON-SALEM, DAVIDSON COUNTY, NCGROUNDWATER ANALYTICALRESULTS MAPMAY 2023WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.comJ:\23\0307-DL-Pace Oi
lGeorge Snyder\Enviro\CAD\TF23446 BASE 05-24-2023.dwg- June 9, 2023 -
LALLYNLEGENDTYPE II MONITORING WELL LOCATIONTYPE III MONITORING WELL LOCATION(ABANDONED)NOTES: 1.) 2022 AERIAL OBTAINED FROM NC ONE MAP.
WithersRavenel
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TABLES
UST IDNumberCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofUSTWas release associated with UST System? (Y/N)13,000 Steel 64" x 12'Unknown1971Permanently Closed By Removal (4/8/1999)Y23,000 Steel 64" x 18'Unknown1971Permanently Closed By Removal (4/8/1999)N32,000 Steel 64" x 18'Unknown1971Permanently Closed By Removal (4/8/1999)YAST IDNumberCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofASTWas release associated with AST System? (Y/N)IncidentNumberMaterialReleasedDateofRelease23446 GasolineDiscovered 4/8/1999Notes:1) UST Information for Tank 1 obtained from the June 28, 1999 UST Closure Report prepared by Legacy Environmental Services, Inc.GasolineGasolineGasolineTable B-1Site History: UST/AST System & Other Release InformationPace Oil - George Snyder Estate #2Petroleum odors were noted during the UST closure activities in April 1999. Impacts were confirmed by laboratory analysis.2495 Hickory Tree RoadWinston-Salem, Davidson County, North CarolinaDescription of ReleaseIncident # 23446Current/LastContentsCurrent/LastContentsPage 1 of 1
Acetone Benzene Butylbenzene, n‐Butylbenzene, sec‐ Dibromoethane, 1,2‐ Ethylbenzene Isopropylbenzene (Cumene) Isopropyltoluene, 4‐ MBK, Methyl Butyl Ketone (2‐Hexanone) Naphthalene Propylbenzene, n‐Toluene Trimethylbenzene, 1,2,4‐ Trimethylbenzene, 1,3,5‐Xylenes, total 67‐64‐171‐43‐2 104‐51‐8 135‐98‐8 106‐93‐4 100‐41‐498‐82‐899‐87‐6 591‐78‐691‐20‐3 103‐65‐1 108‐88‐395‐63‐6 108‐67‐81330‐20‐7MW‐1R 5/2/2023186 67.4 24.1 22.7 25.0 3,590 156.0 10.5 16.4 1,320 395 35,200 3,170 828 22,900MW‐2 5/2/2023MW‐3 5/2/2023 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500MW‐4 5/2/2023 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500Field Blank 5/2/2023 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.5006000 1 70 70 0.02 600 70 25 40 6 70 600 400 400 5006,000,000 5,000 5,900 8,800 50 80,000 30,500 11,700 40,000 6,000 26,100 260,000 28,500 24,100 50,000Notes:1)2)3)4)ResultResultResultWinston‐Salem, Davidson County, North CarolinaTABLE B‐4SUMMARY OF CURRENT GROUNDWATER ANALYTICAL RESULTSPace Oil ‐ George Snyder Estate #2Incident # 234462495 Hickory Tree RoadGCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater.Analytical MethodSM6200BSample IDDateCollectedNC 2L Standard GCLs for GroundwaterAll results provided in ug/L (micrograms per liter) or parts per billion.Compounds analyzed for by laboratory but not listed were not detected above laboratory detection limits. See the laboratory report included in the Appendix for a full list of constituents. NC 2L Standard ‐ North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.Not Located= Result Exceeds NC Gross Contaminant Level for Groundwater= Result Exceeds Laboratory Detection Limits= Result Exceeds NC 2L Standard for Groundwater
Acetone Benzene Butylbenzene, n‐Butylbenzene, sec‐ Dibromoethane, 1,2‐ Dichloroethane, 1,2‐ Ethylbenzene Isopropyl Ether Isopropylbenzene (Cumene) Isopropyltoluene, 4‐ MBK, Methyl Butyl Ketone (2‐Hexanone) MIBK (4‐Methyl‐2‐pentanone) Naphthalene Propylbenzene, n‐Toluene Trichloroethane, 1,1,2‐ Trichloropropane, 1,2,3‐ Trimethylbenzene, 1,2,4‐ Trimethylbenzene, 1,3,5‐Xylenes, total 67‐64‐171‐43‐2 104‐51‐8 135‐98‐8 106‐93‐4 107‐06‐2 100‐41‐4108‐20‐398‐82‐899‐87‐6 591‐78‐6 108‐10‐191‐20‐3 103‐65‐1 108‐88‐379‐00‐596‐18‐495‐63‐6 108‐67‐81330‐20‐76/30/2010 NR950ND ND1,1304882,610 1,190 139ND ND ND1,170 380 17,900 16.1ND2,760 850 16,7808/20/2010 NR480ND ND604268 1,290 631 71.8ND ND ND629 192 9,150ND ND1,480 563 7,90011/2/2010 NR668ND ND685242 1,540 589 77.7ND ND ND706 200 10,300ND ND1,560 611 10,66012/10/20101/28/2011 NR982ND ND612270 2,050 639 129ND ND ND1,040 342 15,900ND ND2,670 939 15,4005/4/2011 NR1,720 193ND1,2204113,210 891 145ND1,510ND907 390 27,700ND ND2,640 801 22,0709/8/2011 NR1,640ND ND1,250373 3,150 854 150 59.5 1,230 472 765 427 26,400ND12.52,680 902 22,0806/19/2012 NR1,690ND ND1,360348 3,370 613 162ND1,350ND826 422 29,500ND ND2,900 793 22,2901/22/2013 NR1,720ND ND1,340325 3,130 690 140ND ND ND823 378 29,700ND ND2,610 719 20,5006/8/2021 <100074.0<50.0 <50.096.6<50.03,720<50.074.8<50.0 <100 <100424 180 14,300<50.0 <50.01,220 357 11,9005/2/2023186 67.4 24.1 22.7 25.0<5.003,590<5.00156.0 10.516.4 <10.01320 395 35,200<5.00 <5.003,170 828 22,9006/30/2010 NR1.5ND ND17.1 11 26.7 35.5 1.4ND ND ND11.5ND34.4ND ND ND74.8 202.78/20/2010 NR1.0ND ND5.6 2.5 12.7 6.4 0.52ND ND ND6.7ND36.9ND ND ND29.9 101.011/2/2010 NR2.0ND ND6.2 2.6 21.3 5.7 1.6ND ND ND10.4 2.9 57.4ND ND31.7 28.5 163.51/28/2011 NR2.4 2.2ND7.3 7.3 5.7 15.4 1.5ND ND ND7.30.647.5ND ND ND12.3 71.15/4/2011 NR1.7ND ND5.3 3.3 9.3 6.7 0.88ND ND ND5.8 1.1 5.2ND ND ND8.6 36.49/8/2011 NR3.1ND ND8.1 5.9 15.1 17.7 2.4ND ND ND11.6 2.2 6.8ND ND ND29.5 67.26/19/2012 NR ND ND0.54ND ND ND ND ND ND ND ND ND ND ND ND ND ND0.61 0.701/22/2013 NR0.69ND ND0.63 1.20.27J3.4ND ND ND ND 1.6J 0.26J ND ND ND ND1.6 5.96/8/2021 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006000 1 70 70 0.02 0.4 600 70 70 25 40 100 6 70 600 0.6 NL 400 400 5006,000,000 5,000 5,900 8,800 50 400 80,000 70,000 30,500 11,700 40,000 100,000 6,000 26,100 260,000 600 NL 28,500 24,100 50,000Notes:1)2)3)4)5) Historical Groundwater data from Groundwater Monitoring Report by S&ME, dated July 1, 2020. ResultResultResult= Result Exceeds NC Gross Contaminant Level for GroundwaterAll results provided in ug/L (micrograms per liter) or parts per billion.Compounds analyzed for by laboratory but not listed were not detected above laboratory detection limits. See the laboratory report included in the Appendix for a full list of constituents. NC 2L Standard ‐ North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater.= Result Exceeds Laboratory Detection Limits= Result Exceeds NC 2L Standard for GroundwaterGCLs for GroundwaterAnalytical MethodSM6200BNC 2L Standard MW‐2MW‐1MW‐1RAbandonedSample IDDateCollectedTABLE B‐4ASUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL RESULTSPace Oil ‐ George Snyder Estate #2Incident # 234462495 Hickory Tree RoadWinston‐Salem, Davidson County, North CarolinaPage 1 of 2
Acetone Benzene Butylbenzene, n‐Butylbenzene, sec‐ Dibromoethane, 1,2‐ Dichloroethane, 1,2‐ Ethylbenzene Isopropyl Ether Isopropylbenzene (Cumene) Isopropyltoluene, 4‐ MBK, Methyl Butyl Ketone (2‐Hexanone) MIBK (4‐Methyl‐2‐pentanone) Naphthalene Propylbenzene, n‐Toluene Trichloroethane, 1,1,2‐ Trichloropropane, 1,2,3‐ Trimethylbenzene, 1,2,4‐ Trimethylbenzene, 1,3,5‐Xylenes, total 67‐64‐171‐43‐2 104‐51‐8 135‐98‐8 106‐93‐4 107‐06‐2 100‐41‐4108‐20‐398‐82‐899‐87‐6 591‐78‐6 108‐10‐191‐20‐3 103‐65‐1 108‐88‐379‐00‐596‐18‐495‐63‐6 108‐67‐81330‐20‐7Analytical MethodSM6200BSample IDDateCollectedTABLE B‐4ASUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL RESULTSPace Oil ‐ George Snyder Estate #2Incident # 234462495 Hickory Tree RoadWinston‐Salem, Davidson County, North Carolina1/28/20118.5ND ND20.6 23.4 98.3 87.9 7.2ND ND ND54.1 20.3 208ND0.94264 168 1,1865/4/20115.2ND ND26.6 18.6 227.0 53.3 20.9ND ND ND57.4 70.6 65.6ND ND360 203 1,4389/8/20112.2ND6.1 18.2 14 72.4 42.4 11.8 13.0 7.3ND17.6 30.1 26.1ND0.69117 107 5556/19/20122.4ND ND11 11.9 29.4 31.3 9.1ND ND ND22.1 19.7 7.9ND ND122 84.7 3791/22/20132.4ND ND10.9 10.2 14.0 29.7 4.2ND ND ND15.4 9.1 4.3ND ND69.9 44.7 2426/8/2021 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5001/28/2011 ND ND ND ND ND ND0.6ND ND ND ND ND ND ND ND ND ND ND ND5/4/2011 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND9/8/2011 ND ND ND ND ND ND ND ND ND12.7ND ND ND ND ND ND ND ND ND6/19/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND1/22/2013 ND ND ND ND ND ND ND ND ND ND ND1.7JND ND ND ND ND ND ND6/8/2021 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/30/20102,410ND ND1,4806561,700 1,430 84.2ND ND ND895 190 18,200ND ND1,610 699 12,2208/20/2010758ND619 485 325 561 810 29.2ND ND ND527 62.7 7,830ND ND1,010 515 6,60011/2/20101,080ND ND498 267 900 650 34.7ND ND ND601 77.7 9,730ND ND1,080 394 7,74012/10/20106000 1 70 70 0.02 0.4 600 70 70 25 40 100 6 70 600 0.6 NL 400 400 5006,000,000 5,000 5,900 8,800 50 400 80,000 70,000 30,500 11,700 40,000 100,000 6,000 26,100 260,000 600 NL 28,500 24,100 50,000Notes:1)2)3)4)5) Historical Groundwater data from Groundwater Monitoring Report by S&ME, dated July 1, 2020. ResultResultResult= Result Exceeds Laboratory Detection Limits= Result Exceeds NC 2L Standard for Groundwater= Result Exceeds NC Gross Contaminant Level for GroundwaterGCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater.GCLs for GroundwaterAll results provided in ug/L (micrograms per liter) or parts per billion.Compounds analyzed for by laboratory but not listed were not detected above laboratory detection limits. See the laboratory report included in the Appendix for a full list of constituents. NC 2L Standard ‐ North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.MW‐3MW‐4MW‐5AbandonedNC 2L Standard Page 2 of 2
Suspected WSW139 Essick LaneDunn, NCDavidson Joel Ray Essick169 Essick LaneWinston-Salem, NC 27127Unknown, unsure if well existsUnknown Unknown 870 feet Northwest UpgradientProperty not connected to municipal water, no water supply well observedNotes: 1)Well ID Property Address County Property Owner Well UseWell Depth(feet)Well Screen Interval(feet)Well Distance from Source Area(feet)Location Relative to Groundwater FlowProperty Owner AddressProperty owner information was obtained from Davidson County, NC Geographic Information System on 7/10/2023.TABLE B-5APUBLIC & PRIVATE WATER SUPPLY WELL INFORMATIONPace Oil - George Snyder Estate #2Incident # 234462495 Hickory Tree RoadWinston-Salem, Davidson County, North CarolinaCommentsPage 1 of 1
SITEHickory Tree RoadWinston‐Salem, NCCarolyn Thomas352 James RoadClemmons, NC 27012‐9318VacantRC‐‐‐‐‐‐12558 Hickory Tree RoadWinston‐Salem, NCHubert Snyder2615 Hickory Tree RoadWinston‐Salem, NC 27127‐9015VacantRA310 ft NWUp‐gradient2550 Merrifield WayWinston‐Salem, NCRobert & Victoria Grace550 Merrifield WayWinston‐Salem, NC 27127ResidentialRA3175 WDowngradient32429 Hickory Tree RoadWinston‐Salem, NCHuffman Rentals Inc.5229 Brenda DriveWinston‐Salem, NC 27107ResidentialRA355 ft SEDowngradient4110 Hidden Creek RoadWinston‐Salem, NCJames & Donna Cheek110 Hidden Creek RoadWinston‐Salem, NC 27127ResidentialRA385 ft NUp‐gradient5111 Hidden Creek RoadWinston‐Salem, NCJeremy Bowen111 Hidden Creek RoadWinston‐Salem, NC 27127ResidentialRA3145 ft NUp‐gradient62558 Hickory Tree RoadWinston‐Salem, NCHubert Snyder2615 Hickory Tree RoadWinston‐Salem, NC 27127‐9015Old Soul Productions Vintage Goods & AntiquesRA3275 ft NWUp‐gradient1)2)3)Davidson County Zoning Codes: RC = Rural Commercial DistrictRA3 = Rural Agricultural DistrictNotes: Property owner information from the Davidson County GIS Service, data current as of June 9, 2023. See Figure 4 for corresponding map information.Distances shown from source area are measured from the source area and the nearest property boundary of the adjacent property.Location Relative to Groundwater FlowProperty IDProperty AddressProperty Owner & AddressUsageZoningDistance/Direction from Source AreaWinston‐Salem, Davidson County, North CarolinaTABLE B‐5CADJACENT PROPERTY INFORMATIONPace Oil ‐ George Snyder Estate #2Incident # 234462495 Hickory Tree Road
Well ID Date of Installation
Screened
Interval (feet)
Total Depth (feet below ground surface)
Well Diameter (inches)Top‐of‐Casing Elevation (feet)Date Water Level Measured Depth‐to‐LNAPL(feet)
Depth‐to‐WaterUncorrected(feet)
LNAPL Thickness(feet)
Groundwater SurfaceElevation (feet)
4/19/2002 NM 38.82 NM 59.82
6/30/2010 NM 30.33 NM 68.31
8/20/2010 NM 29.11 NM 69.53
11/2/2010 NM 27.70 NM 70.94
12/10/2010
1/28/2011 NM 29.14 NM 72.18
5/4/2011 NM 28.90 NM 72.42
9/8/2011 NM 29.06 NM 72.26
6/9/2012 NM 28.46 NM 72.86
1/22/2013 NM 29.46 NM 71.86
6/8/2021 NM 22.04 NM 79.28
5/2/2023 NM 25.12 NM 76.20
6/30/2010 NM 27.74 NM 72.26
8/20/2010 NM 27.64 NM 72.36
11/2/2010 NM 28.61 NM 71.39
1/28/2011 NM 27.81 NM 72.19
5/4/2011 NM 27.54 NM 72.46
9/8/2011 NM 27.79 NM 72.21
6/9/2012 NM 27.15 NM 72.85
1/22/2013 NM 28.09 NM 71.91
6/8/2021 NM 19.98 NM 80.02
5/2/2023
1/28/2011 NM 29.85 NM 72.30
5/4/2011 NM 29.72 NM 72.43
9/8/2011 NM 29.80 NM 72.35
6/9/2012 NM 29.27 NM 72.88
1/22/2013 NM 30.31 NM 71.84
6/8/2021 NM 22.02 NM 80.13
5/2/2023 NM 26.28 NM 75.87
1/28/2011 NM 28.66 NM 72.17
5/4/2011 NM 28.39 NM 72.44
9/8/2011 NM 28.68 NM 72.15
6/9/2012 NM 28.02 NM 72.81
1/22/2013 NM 28.75 NM 72.08
6/8/2021 NM 20.91 NM 79.92
5/2/2023 NM 24.78 NM 76.05
6/30/2010 NM 28.64 NM NM
8/20/2010 NM 28.55 NM NM
11/2/2010 NM 29.16 NM NM
12/10/2010
1)
2)3)4)
MW‐4 1/14/2011 20‐45 45 2
MW‐5 Unknown ‐ Prior to 6/30/2010 Unknown 50.51 6/2
NM = Not Measured.
TABLE B‐7MONITORING WELL CONSTRUCTION INFORMATION AND LIQUID LEVEL DATA
Pace Oil ‐ George Snyder Estate #2Incident # 234462495 Hickory Tree RoadWinston‐Salem, Davidson County, North Carolina
Notes: Top of Casing (TOC) elevations and monitoring well construction information obtained from February 7, 2013 report prepared by Progress Environmental.LNAPL ‐ Light Non‐Aqueous Phase LiquidGroundwater elevation adjusted for LNAPL is [Top of Casing Elevation ‐ Depth to Water] + [LNAPL Thickness * 0.8581]
MW‐1R 1/14/2011 101.322
Abandoned
98.64
20‐45
MW‐3 1/14/2011 13‐38 38
MW‐221‐46 46
2 102.15
MW‐1 11/9/2001 20‐50 50 2
6/25/2010
45
Abandoned
2 100.00
100.83
Unknown
Could Not Locate
Page 1 of 1
WithersRavenel
Our People. Your Success.
APPENDIX A
FIELD NOTES & PHOTOGRAPHIC RECORD
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. #23446 WR Project # 23‐0307‐DL Groundwater Monitoring Report Photograph Date: June 2, 2023
PHOTO 1 Photograph of the site facing southwest
PHOTO 2
Photograph from the site facing south
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. #23446 WR Project # 23‐0307‐DL Groundwater Monitoring Report Photograph Date: June 2, 2023
PHOTO 3 Location of MW‐1R after clearing vegetation. Facing northwest
PHOTO 4 Location of monitoring well MW‐1R with ORS sleeves
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. #23446 WR Project # 23‐0307‐DL Groundwater Monitoring Report Photograph Date: June 2, 2023
PHOTO 5 Location where monitoring well MW‐2 should be. Facing northeast
PHOTO 6 Location of monitoring well MW‐3 facing southwest
WithersRavenel
Our People. Your Success.
Pace Oil – George Snyder Estate #2 – NCDEQ Inc. #23446 WR Project # 23‐0307‐DL Groundwater Monitoring Report Photograph Date: June 2, 2023
PHOTO 7 Location of monitoring well MW‐4 facing southwest
WithersRavenel
Our People. Your Success.
APPENDIX B
LABORATORY ANALYTICAL REPORT AND CHAIN‐OF‐CUSTODY
Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the
analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.
5/12/2023
Withers & Ravenel Liz Allyn
115 Mackenan Dr. BUILDING 117 Cary, NC, 27511
Ref: Analytical Testing
Lab Report Number: 23-125-0021 Client Project Description: Pace Oil George Snyder#2
23-0307-DL
Dear Liz Allyn:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 5/5/2023 for the analyses presented in the following report.
The above referenced project has been analyzed per your instructions. The analyses were performed in
accordance with the applicable analytical method.
The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all
parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance.
The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-
received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information.
Sincerely,
Angela D Overcash Senior Project Manager
Page 1 of 29
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202337735State ProgramNorth Carolina
12/31/2023402State ProgramNorth Carolina
07/31/202399012State ProgramSouth Carolina
12/31/202299012State ProgramSouth Carolina
Page 1 of 1 00016/23-125-0021
Page 2 of 29
Report Number:
Sample Summary Table
Client Project Description:
23-125-0021
Pace Oil George Snyder#2
23-0307-DL
Lab No Client Sample ID Matrix Date Collected Date Received
05/02/2023 15:50Aqueous 95574 MW-1R 05/05/2023 13:20
05/02/2023 14:40Aqueous 95575 MW-3 05/05/2023 13:20
05/02/2023 15:10Aqueous 95576 MW-4 05/05/2023 13:20
05/02/2023 16:35Aqueous 95577 Field Blank1 05/05/2023 13:20
Page 3 of 29
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-125-0021
Report Limit
Project:Pace Oil George Snyder#2
V 95574MW-1R
186 05/10/2023 00:226200BAcetoneµg/L 100
67.4 05/10/2023 00:226200BBenzeneµg/L 5.00
24.1 05/10/2023 00:226200Bn-Butylbenzene µg/L 5.00
22.7 05/10/2023 00:226200Bsec-Butyl benzene µg/L 5.00
25.0 05/10/2023 00:226200B1,2-Dibromoethane µg/L 5.00
3590 05/10/2023 20:516200BEthylbenzeneµg/L 500
16.4 05/10/2023 00:226200B2-Hexanone µg/L 10.0
156 05/10/2023 00:226200BIsopropylbenzeneµg/L 5.00
10.5 05/10/2023 00:226200B4-Isopropyl toluene µg/L 5.00
1320 05/10/2023 20:516200BNaphthaleneµg/L 1000
395 05/10/2023 00:226200Bn-Propylbenzene µg/L 5.00
35200 05/10/2023 20:516200BTolueneµg/L 500
3170 05/10/2023 20:516200B1,2,4-Trimethylbenzene µg/L 500
828 05/10/2023 00:226200B1,3,5-Trimethylbenzene µg/L 5.00
8180 05/10/2023 20:516200Bo-Xylene µg/L 500
14700 05/10/2023 20:516200Bm,p-Xylene µg/L 1000
22900 05/10/2023 20:516200BXylene (Total)µg/L 500
Page 4 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-1R
95574 Matrix:
5/2/2023 15:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
186 µg/L 100Acetone 10 05/10/23 00:22 6200BMSA
67.4 µg/L 5.00Benzene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Bromobenzene 10 05/10/23 00:22 6200BMSA
<10.0 µg/L 10.0Bromochloromethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Bromodichloromethane 10 05/10/23 00:22 6200BMSA
<50.0 µg/L 50.0Bromoform 10 05/10/23 00:22 6200BMSA
<10.0 µg/L 10.0Bromomethane 10 05/10/23 00:22 6200BMSA
24.1 µg/L 5.00n-Butylbenzene 10 05/10/23 00:22 6200BMSA
22.7 µg/L 5.00sec-Butyl benzene 10 05/10/23 00:22 6200BMSA
<20.0 µg/L 20.0tert-Butyl benzene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Carbon Tetrachloride 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Chlorobenzene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Chlorodibromomethane 10 05/10/23 00:22 6200BMSA
<10.0 µg/L 10.0Chloroethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Chloroform 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Chloromethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.002-Chlorotoluene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.004-Chlorotoluene 10 05/10/23 00:22 6200BMSA
<20.0 µg/L 20.01,2-Dibromo-3-Chloropropane 10 05/10/23 00:22 6200BMSA
25.0 µg/L 5.001,2-Dibromoethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Dibromomethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,2-Dichlorobenzene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,3-Dichlorobenzene 10 05/10/23 00:22 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 5 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-1R
95574 Matrix:
5/2/2023 15:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<5.00 µg/L 5.001,4-Dichlorobenzene 10 05/10/23 00:22 6200BMSA
<50.0 µg/L 50.0Dichlorodifluoromethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,1-Dichloroethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,2-Dichloroethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,1-Dichloroethene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00cis-1,2-Dichloroethene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00trans-1,2-Dichloroethene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,2-Dichloropropane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,3-Dichloropropane 10 05/10/23 00:22 6200BMSA
<20.0 µg/L 20.02,2-Dichloropropane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,1-Dichloropropene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00cis-1,3-Dichloropropene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00trans-1,3-Dichloropropene 10 05/10/23 00:22 6200BMSA
<2000 µg/L 2000Ethanol 10 05/10/23 00:22 6200BMSA
3590 µg/L 500Ethylbenzene 1000 05/10/23 20:51 6200BMSA
<30.0 µg/L 30.0Hexachlorobutadiene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Di-Isopropyl Ether (DIPE)10 05/10/23 00:22 6200BMSA
156 µg/L 5.00Isopropylbenzene 10 05/10/23 00:22 6200BMSA
10.5 µg/L 5.004-Isopropyl toluene 10 05/10/23 00:22 6200BMSA
16.4 µg/L 10.02-Hexanone 10 05/10/23 00:22 6200BMSA
<50.0 µg/L 50.0Methyl Ethyl Ketone (MEK)10 05/10/23 00:22 6200BMSA
<20.0 µg/L 20.0Methylene Chloride 10 05/10/23 00:22 6200BMSA
<10.0 µg/L 10.0Methyl tert-butyl ether (MTBE)10 05/10/23 00:22 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 6 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-1R
95574 Matrix:
5/2/2023 15:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.04-Methyl-2-Pentanone 10 05/10/23 00:22 6200BMSA
1320 µg/L 1000Naphthalene 1000 05/10/23 20:51 6200BMSA
395 µg/L 5.00n-Propylbenzene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Styrene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,1,1,2-Tetrachloroethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,1,2,2-Tetrachloroethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Tetrachloroethene 10 05/10/23 00:22 6200BMSA
35200 µg/L 500Toluene 1000 05/10/23 20:51 6200BMSA
<5.00 µg/L 5.001,2,3-Trichlorobenzene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,2,4-Trichlorobenzene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,1,1-Trichloroethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,1,2-Trichloroethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Trichloroethene 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Trichlorofluoromethane 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.001,2,3-Trichloropropane 10 05/10/23 00:22 6200BMSA
3170 µg/L 5001,2,4-Trimethylbenzene 1000 05/10/23 20:51 6200BMSA
828 µg/L 5.001,3,5-Trimethylbenzene 10 05/10/23 00:22 6200BMSA
<50.0 µg/L 50.0Vinyl Acetate 10 05/10/23 00:22 6200BMSA
<5.00 µg/L 5.00Vinyl Chloride 10 05/10/23 00:22 6200BMSA
14700 µg/L 1000m,p-Xylene 1000 05/10/23 20:51 6200BMSA
8180 µg/L 500o-Xylene 1000 05/10/23 20:51 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 7 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-1R
95574 Matrix:
5/2/2023 15:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
22900 µg/L 500Xylene (Total)1000 05/10/23 20:51 6200B
Surrogate: 4-Bromofluorobenzene 99.4 Limits: 70-130%05/10/23 00:2210 MSA V32988
Surrogate: Dibromofluoromethane 105 Limits: 70-130%05/10/23 00:2210 MSA V32988
Surrogate: 1,2-Dichloroethane - d4 110 Limits: 70-130%05/10/23 00:2210 MSA V32988
Surrogate: Toluene-d8 95.8 Limits: 70-130%05/10/23 00:2210 MSA V32988
Surrogate: 4-Bromofluorobenzene 99.8 Limits: 70-130%05/10/23 20:511000 MSA V33045
Surrogate: Dibromofluoromethane 91.2 Limits: 70-130%05/10/23 20:511000 MSA V33045
Surrogate: 1,2-Dichloroethane - d4 88.4 Limits: 70-130%05/10/23 20:511000 MSA V33045
Surrogate: Toluene-d8 94.8 Limits: 70-130%05/10/23 20:511000 MSA V33045
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 8 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-3
95575 Matrix:
5/2/2023 14:40
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Benzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 05/09/23 23:00 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 05/09/23 23:00 6200BMSA
<5.00 µg/L 5.00Bromoform 1 05/09/23 23:00 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 05/09/23 23:00 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 05/09/23 23:00 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Chloroform 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 05/09/23 23:00 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 05/09/23 23:00 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 9 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-3
95575 Matrix:
5/2/2023 14:40
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 05/09/23 23:00 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 05/09/23 23:00 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 05/09/23 23:00 6200BMSA
<200 µg/L 200Ethanol 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 05/09/23 23:00 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 05/09/23 23:00 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 05/09/23 23:00 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 05/09/23 23:00 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 05/09/23 23:00 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 05/09/23 23:00 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 10 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-3
95575 Matrix:
5/2/2023 14:40
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 05/09/23 23:00 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Styrene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Toluene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 05/09/23 23:00 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 05/09/23 23:00 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 05/09/23 23:00 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 05/09/23 23:00 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 11 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-3
95575 Matrix:
5/2/2023 14:40
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 05/09/23 23:00 6200B
Surrogate: 4-Bromofluorobenzene 98.8 Limits: 70-130%05/09/23 23:001 MSA V32988
Surrogate: Dibromofluoromethane 105 Limits: 70-130%05/09/23 23:001 MSA V32988
Surrogate: 1,2-Dichloroethane - d4 110 Limits: 70-130%05/09/23 23:001 MSA V32988
Surrogate: Toluene-d8 96.8 Limits: 70-130%05/09/23 23:001 MSA V32988
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 12 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-4
95576 Matrix:
5/2/2023 15:10
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Benzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 05/09/23 23:27 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 05/09/23 23:27 6200BMSA
<5.00 µg/L 5.00Bromoform 1 05/09/23 23:27 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 05/09/23 23:27 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 05/09/23 23:27 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Chloroform 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 05/09/23 23:27 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 05/09/23 23:27 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 13 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-4
95576 Matrix:
5/2/2023 15:10
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 05/09/23 23:27 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 05/09/23 23:27 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 05/09/23 23:27 6200BMSA
<200 µg/L 200Ethanol 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 05/09/23 23:27 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 05/09/23 23:27 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 05/09/23 23:27 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 05/09/23 23:27 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 05/09/23 23:27 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 05/09/23 23:27 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 14 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-4
95576 Matrix:
5/2/2023 15:10
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 05/09/23 23:27 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Styrene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Toluene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 05/09/23 23:27 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 05/09/23 23:27 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 05/09/23 23:27 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 05/09/23 23:27 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 15 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:MW-4
95576 Matrix:
5/2/2023 15:10
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 05/09/23 23:27 6200B
Surrogate: 4-Bromofluorobenzene 98.6 Limits: 70-130%05/09/23 23:271 MSA V32988
Surrogate: Dibromofluoromethane 105 Limits: 70-130%05/09/23 23:271 MSA V32988
Surrogate: 1,2-Dichloroethane - d4 109 Limits: 70-130%05/09/23 23:271 MSA V32988
Surrogate: Toluene-d8 95.4 Limits: 70-130%05/09/23 23:271 MSA V32988
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 16 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:Field Blank1
95577 Matrix:
5/2/2023 16:35
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Benzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 05/09/23 16:38 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 05/09/23 16:38 6200BMSA
<5.00 µg/L 5.00Bromoform 1 05/09/23 16:38 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 05/09/23 16:38 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 05/09/23 16:38 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Chloroform 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 05/09/23 16:38 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 05/09/23 16:38 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 17 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:Field Blank1
95577 Matrix:
5/2/2023 16:35
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 05/09/23 16:38 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 05/09/23 16:38 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 05/09/23 16:38 6200BMSA
<200 µg/L 200Ethanol 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 05/09/23 16:38 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 05/09/23 16:38 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 05/09/23 16:38 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 05/09/23 16:38 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 05/09/23 16:38 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 05/09/23 16:38 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 18 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:Field Blank1
95577 Matrix:
5/2/2023 16:35
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 05/09/23 16:38 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Styrene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Toluene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 05/09/23 16:38 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 05/09/23 16:38 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 05/09/23 16:38 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 05/09/23 16:38 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 19 of 29
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-125-0021
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
23-0307-DL Received : 05/05/2023
Pace Oil George Snyder#2
Report Date : 05/12/2023
Sample ID :
Lab No :
Sampled:Field Blank1
95577 Matrix:
5/2/2023 16:35
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 05/09/23 16:38 6200B
Surrogate: 4-Bromofluorobenzene 97.8 Limits: 70-130%05/09/23 16:381 MSA V32988
Surrogate: Dibromofluoromethane 103 Limits: 70-130%05/09/23 16:381 MSA V32988
Surrogate: 1,2-Dichloroethane - d4 109 Limits: 70-130%05/09/23 16:381 MSA V32988
Surrogate: Toluene-d8 96.4 Limits: 70-130%05/09/23 16:381 MSA V32988
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 20 of 29
Quality Control Data
23-125-0021Report No:
Project Description:
Client ID:Withers & Ravenel
Pace Oil George Snyder#2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32988QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32987
Associated Lab Samples: 95574, 95575, 95576, 95577
LRB-V32987 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
05/09/23 16:1010.0< 10.0µg/LAcetone
05/09/23 16:100.500< 0.500µg/LBenzene
05/09/23 16:100.500< 0.500µg/LBromobenzene
05/09/23 16:101.00< 1.00µg/LBromochloromethane
05/09/23 16:100.500< 0.500µg/LBromodichloromethane
05/09/23 16:105.00< 5.00µg/LBromoform
05/09/23 16:101.00< 1.00µg/LBromomethane
05/09/23 16:100.500< 0.500µg/Ln-Butylbenzene
05/09/23 16:100.500< 0.500µg/Lsec-Butyl benzene
05/09/23 16:102.00< 2.00µg/Ltert-Butyl benzene
05/09/23 16:100.500< 0.500µg/LCarbon Tetrachloride
05/09/23 16:100.500< 0.500µg/LChlorobenzene
05/09/23 16:100.500< 0.500µg/LChlorodibromomethane
05/09/23 16:101.00< 1.00µg/LChloroethane
05/09/23 16:100.500< 0.500µg/LChloroform
05/09/23 16:100.500< 0.500µg/LChloromethane
05/09/23 16:100.500< 0.500µg/L2-Chlorotoluene
05/09/23 16:100.500< 0.500µg/L4-Chlorotoluene
05/09/23 16:102.00< 2.00µg/L1,2-Dibromo-3-Chloropropane
05/09/23 16:100.500< 0.500µg/L1,2-Dibromoethane
05/09/23 16:100.500< 0.500µg/LDibromomethane
05/09/23 16:100.500< 0.500µg/L1,2-Dichlorobenzene
05/09/23 16:100.500< 0.500µg/L1,3-Dichlorobenzene
05/09/23 16:100.500< 0.500µg/L1,4-Dichlorobenzene
05/09/23 16:105.00< 5.00µg/LDichlorodifluoromethane
05/09/23 16:100.500< 0.500µg/L1,1-Dichloroethane
05/09/23 16:100.500< 0.500µg/L1,2-Dichloroethane
Page 1 of 7Date:05/12/2023 10:25 AM
Page 21 of 29
Quality Control Data
23-125-0021Report No:
Project Description:
Client ID:Withers & Ravenel
Pace Oil George Snyder#2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32988QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32987
Associated Lab Samples: 95574, 95575, 95576, 95577
LRB-V32987 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
05/09/23 16:100.500< 0.500µg/L1,1-Dichloroethene
05/09/23 16:100.500< 0.500µg/Lcis-1,2-Dichloroethene
05/09/23 16:100.500< 0.500µg/Ltrans-1,2-Dichloroethene
05/09/23 16:100.500< 0.500µg/L1,2-Dichloropropane
05/09/23 16:100.500< 0.500µg/L1,3-Dichloropropane
05/09/23 16:102.00< 2.00µg/L2,2-Dichloropropane
05/09/23 16:100.500< 0.500µg/L1,1-Dichloropropene
05/09/23 16:100.500< 0.500µg/Lcis-1,3-Dichloropropene
05/09/23 16:100.500< 0.500µg/Ltrans-1,3-Dichloropropene
05/09/23 16:10200< 200µg/LEthanol
05/09/23 16:100.500< 0.500µg/LEthylbenzene
05/09/23 16:103.00< 3.00µg/LHexachlorobutadiene
05/09/23 16:100.500< 0.500µg/LDi-Isopropyl Ether (DIPE)
05/09/23 16:100.500< 0.500µg/LIsopropylbenzene
05/09/23 16:100.500< 0.500µg/L4-Isopropyl toluene
05/09/23 16:101.00< 1.00µg/L2-Hexanone
05/09/23 16:105.00< 5.00µg/LMethyl Ethyl Ketone (MEK)
05/09/23 16:102.00< 2.00µg/LMethylene Chloride
05/09/23 16:101.00< 1.00µg/LMethyl tert-butyl ether (MTBE)
05/09/23 16:101.00< 1.00µg/L4-Methyl-2-Pentanone
05/09/23 16:101.00< 1.00µg/LNaphthalene
05/09/23 16:100.500< 0.500µg/Ln-Propylbenzene
05/09/23 16:100.500< 0.500µg/LStyrene
05/09/23 16:100.500< 0.500µg/L1,1,1,2-Tetrachloroethane
05/09/23 16:100.500< 0.500µg/L1,1,2,2-Tetrachloroethane
05/09/23 16:100.500< 0.500µg/LTetrachloroethene
05/09/23 16:100.500< 0.500µg/LToluene
Page 2 of 7Date:05/12/2023 10:25 AM
Page 22 of 29
Quality Control Data
23-125-0021Report No:
Project Description:
Client ID:Withers & Ravenel
Pace Oil George Snyder#2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32988QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32987
Associated Lab Samples: 95574, 95575, 95576, 95577
LRB-V32987 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
05/09/23 16:100.500< 0.500µg/L1,2,3-Trichlorobenzene
05/09/23 16:100.500< 0.500µg/L1,2,4-Trichlorobenzene
05/09/23 16:100.500< 0.500µg/L1,1,1-Trichloroethane
05/09/23 16:100.500< 0.500µg/L1,1,2-Trichloroethane
05/09/23 16:100.500< 0.500µg/LTrichloroethene
05/09/23 16:100.500< 0.500µg/LTrichlorofluoromethane
05/09/23 16:100.500< 0.500µg/L1,2,3-Trichloropropane
05/09/23 16:100.500< 0.500µg/L1,2,4-Trimethylbenzene
05/09/23 16:100.500< 0.500µg/L1,3,5-Trimethylbenzene
05/09/23 16:105.00< 5.00µg/LVinyl Acetate
05/09/23 16:100.500< 0.500µg/LVinyl Chloride
05/09/23 16:101.00< 1.00µg/Lm,p-Xylene
05/09/23 16:100.500< 0.500µg/Lo-Xylene
05/09/23 16:104-Bromofluorobenzene (S)99.4 70-130
05/09/23 16:10Dibromofluoromethane (S)105 70-130
05/09/23 16:101,2-Dichloroethane - d4 (S)110 70-130
05/09/23 16:10Toluene-d8 (S)96.0 70-130
LCS-V32987 LCSD-V32987Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
36.5 91.286.734.740.0µg/LAcetone 40-160 5.0 20.0
19.6 98.099.019.820.0µg/LBenzene 70-130 1.0 20.0
20.0 10010020.020.0µg/LBromobenzene 70-130 0.0 20.0
21.3 10711322.520.0µg/LBromochloromethane 70-130 5.4 20.0
21.8 10911022.020.0µg/LBromodichloromethane 70-130 0.9 20.0
Page 3 of 7Date:05/12/2023 10:25 AM
Page 23 of 29
Quality Control Data
23-125-0021Report No:
Project Description:
Client ID:Withers & Ravenel
Pace Oil George Snyder#2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32988QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32987
LCS-V32987 LCSD-V32987Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
21.4 10711523.020.0µg/LBromoform 70-130 7.2 20.0
18.8 94.094.018.820.0µg/LBromomethane 60-140 0.0 20.0
18.8 94.095.019.020.0µg/Ln-Butylbenzene 70-130 1.0 20.0
19.7 98.597.019.420.0µg/Lsec-Butyl benzene 70-130 1.5 20.0
20.5 10310220.420.0µg/Ltert-Butyl benzene 70-130 0.4 20.0
24.9 12512424.820.0µg/LCarbon Tetrachloride 70-130 0.4 20.0
19.9 99.510120.120.0µg/LChlorobenzene 70-130 1.0 20.0
22.8 11411222.420.0µg/LChlorodibromomethane 70-130 1.7 20.0
20.5 10310821.620.0µg/LChloroethane 60-140 5.2 20.0
21.0 10511522.920.0µg/LChloroform 70-130 8.6 20.0
17.4 87.089.517.920.0µg/LChloromethane 60-140 2.8 20.0
19.7 98.597.519.520.0µg/L2-Chlorotoluene 70-130 1.0 20.0
20.0 10010120.220.0µg/L4-Chlorotoluene 70-130 0.9 20.0
20.7 10410521.020.0µg/L1,2-Dibromo-3-Chloropropane 70-130 1.4 20.0
20.0 10010120.220.0µg/L1,2-Dibromoethane 70-130 0.9 20.0
20.9 10510621.120.0µg/LDibromomethane 70-130 0.9 20.0
19.3 96.597.519.520.0µg/L1,2-Dichlorobenzene 70-130 1.0 20.0
20.5 10310320.620.0µg/L1,3-Dichlorobenzene 70-130 0.4 20.0
19.1 95.597.019.420.0µg/L1,4-Dichlorobenzene 70-130 1.5 20.0
17.6 88.088.017.620.0µg/LDichlorodifluoromethane 60-140 0.0 20.0
21.3 10710621.220.0µg/L1,1-Dichloroethane 70-130 0.4 20.0
21.9 11011222.420.0µg/L1,2-Dichloroethane 70-130 2.2 20.0
22.3 11211522.920.0µg/L1,1-Dichloroethene 70-130 2.6 20.0
21.0 10510220.420.0µg/Lcis-1,2-Dichloroethene 70-130 2.8 20.0
21.0 10510921.720.0µg/Ltrans-1,2-Dichloroethene 70-130 3.2 20.0
19.4 97.098.019.620.0µg/L1,2-Dichloropropane 70-130 1.0 20.0
Page 4 of 7Date:05/12/2023 10:25 AM
Page 24 of 29
Quality Control Data
23-125-0021Report No:
Project Description:
Client ID:Withers & Ravenel
Pace Oil George Snyder#2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32988QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32987
LCS-V32987 LCSD-V32987Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
18.9 94.595.019.020.0µg/L1,3-Dichloropropane 70-130 0.5 20.0
23.1 11611522.920.0µg/L2,2-Dichloropropane 70-130 0.8 20.0
22.9 11511322.620.0µg/L1,1-Dichloropropene 70-130 1.3 20.0
21.3 10710320.620.0µg/Lcis-1,3-Dichloropropene 70-130 3.3 20.0
21.0 10510921.720.0µg/Ltrans-1,3-Dichloropropene 70-130 3.2 20.0
426 85.293.2466500µg/LEthanol 60-140 8.9 20.0
20.2 10110020.020.0µg/LEthylbenzene 70-130 0.9 20.0
22.1 11111021.920.0µg/LHexachlorobutadiene 70-130 0.9 20.0
19.4 97.097.519.520.0µg/LDi-Isopropyl Ether (DIPE)70-130 0.5 20.0
20.6 10310320.520.0µg/LIsopropylbenzene 70-130 0.4 20.0
20.7 10410721.320.0µg/L4-Isopropyl toluene 70-130 2.8 20.0
17.4 87.085.517.120.0µg/L2-Hexanone 60-140 1.7 20.0
16.5 82.582.516.520.0µg/LMethyl Ethyl Ketone (MEK)60-140 0.0 20.0
20.2 10110020.020.0µg/LMethylene Chloride 70-130 0.9 20.0
21.0 10510521.020.0µg/LMethyl tert-butyl ether (MTBE)70-130 0.0 20.0
17.5 87.588.017.620.0µg/L4-Methyl-2-Pentanone 60-140 0.5 20.0
16.5 82.578.515.720.0µg/LNaphthalene 70-130 4.9 20.0
19.4 97.097.519.520.0µg/Ln-Propylbenzene 70-130 0.5 20.0
20.5 10397.519.520.0µg/LStyrene 70-130 5.0 20.0
22.0 11011322.520.0µg/L1,1,1,2-Tetrachloroethane 70-130 2.2 20.0
18.5 92.592.518.520.0µg/L1,1,2,2-Tetrachloroethane 70-130 0.0 20.0
22.0 11010721.320.0µg/LTetrachloroethene 70-130 3.2 20.0
19.6 98.010120.220.0µg/LToluene 70-130 3.0 20.0
22.5 11310821.620.0µg/L1,2,3-Trichlorobenzene 70-130 4.0 20.0
20.3 10210020.020.0µg/L1,2,4-Trichlorobenzene 70-130 1.4 20.0
23.5 11812023.920.0µg/L1,1,1-Trichloroethane 70-130 1.6 20.0
Page 5 of 7Date:05/12/2023 10:25 AM
Page 25 of 29
Quality Control Data
23-125-0021Report No:
Project Description:
Client ID:Withers & Ravenel
Pace Oil George Snyder#2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V32988QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V32987
LCS-V32987 LCSD-V32987Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.1 10198.519.720.0µg/L1,1,2-Trichloroethane 70-130 2.0 20.0
22.1 11110721.420.0µg/LTrichloroethene 70-130 3.2 20.0
22.7 11411422.820.0µg/LTrichlorofluoromethane 60-140 0.4 20.0
20.7 10410521.020.0µg/L1,2,3-Trichloropropane 70-130 1.4 20.0
19.9 99.510220.320.0µg/L1,2,4-Trimethylbenzene 70-130 1.9 20.0
20.5 10310220.320.0µg/L1,3,5-Trimethylbenzene 70-130 0.9 20.0
18.5 92.510120.220.0µg/LVinyl Acetate 60-140 8.7 20.0
18.8 94.099.019.820.0µg/LVinyl Chloride 60-140 5.1 20.0
41.8 10510541.840.0µg/Lm,p-Xylene 70-130 0.0 20.0
20.4 10210320.620.0µg/Lo-Xylene 70-130 0.9 20.0
98.61014-Bromofluorobenzene (S)70-130
102107Dibromofluoromethane (S)70-130
1081091,2-Dichloroethane - d4 (S)70-130
96.696.0Toluene-d8 (S)70-130
Page 6 of 7Date:05/12/2023 10:25 AM
Page 26 of 29
Quality Control Data
23-125-0021Report No:
Project Description:
Client ID:Withers & Ravenel
Pace Oil George Snyder#2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V33045QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V33044
Associated Lab Samples: 95574
LRB-V33044 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
05/10/23 14:150.500< 0.500µg/LEthylbenzene
05/10/23 14:151.00< 1.00µg/LNaphthalene
05/10/23 14:150.500< 0.500µg/LToluene
05/10/23 14:150.500< 0.500µg/L1,2,4-Trimethylbenzene
05/10/23 14:151.00< 1.00µg/Lm,p-Xylene
05/10/23 14:150.500< 0.500µg/Lo-Xylene
05/10/23 14:154-Bromofluorobenzene (S)99.2 70-130
05/10/23 14:15Dibromofluoromethane (S)91.0 70-130
05/10/23 14:151,2-Dichloroethane - d4 (S)87.6 70-130
05/10/23 14:15Toluene-d8 (S)97.2 70-130
LCS-V33044 LCSD-V33044Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
21.7 10911222.320.0µg/LEthylbenzene 70-130 2.7 20.0
21.7 10911122.220.0µg/LNaphthalene 70-130 2.2 20.0
23.7 11912324.520.0µg/LToluene 70-130 3.3 20.0
21.5 10811222.320.0µg/L1,2,4-Trimethylbenzene 70-130 3.6 20.0
45.8 11511746.640.0µg/Lm,p-Xylene 70-130 1.7 20.0
21.8 10911122.120.0µg/Lo-Xylene 70-130 1.3 20.0
10099.24-Bromofluorobenzene (S)70-130
93.090.8Dibromofluoromethane (S)70-130
93.091.61,2-Dichloroethane - d4 (S)70-130
95.097.0Toluene-d8 (S)70-130
Page 7 of 7Date:05/12/2023 10:25 AM
Page 27 of 29
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:23-125-0021
Withers & Ravenel
01221
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:IRT15 2.2C
Chain of Custody (COC) present?Yes No
Yes No Not Present
Yes No Not Present
Yes No
COC agrees with sample label(s)?Yes No
COC properly completed
Samples in proper containers?
Sample containers intact?
Sufficient sample volume for indicated test(s)?
All samples received within holding time?
Cooler temperature in compliance?
Yes No
Yes No
Yes No
Yes No
Yes No
Yes NoCooler/Samples arrived at the laboratory on ice.
Samples were considered acceptable as cooling
process had begun.
Yes No
Yes No N/A
Yes No N/A
Yes No N/ASoil VOA method 5035 – compliance criteria met
Water - Sample containers properly preserved
Water - VOA vials free of headspace Yes No N/A
Trip Blanks received with VOAs
Low concentration EnCore samplers (48 hr)
High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d)
High concentration container (48 hr)
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Number of coolers/boxes received
Yes No
1
Signature:Angelo Norvell Date & Time:05/05/2023 16:03:57
Special precautions or instructions included?
Comments:
Page 28 of 29
Page 29 of 29
WithersRavenel
Our People. Your Success.
APPENDIX C
GENERAL STANDARD OPERATING PROCEDURES
Generalized Standard Operating Procedures (Not All Inclusive)
WithersRavenel
Our People. Your Success.
Soil Sampling, Soil Boring and Monitor Well Installation, Well Development Soil borings are installed utilizing a stainless-steel hand auger, direct-push hydraulic drill or auger rotary
drill using either a macro core™ sampler, hollow stem augers, or air rotary roller cone bit. Soil borings are
typically sampled at discrete intervals from the bucket of a clean stainless steel hand auger, direct push stainless steel sampler with acetate sleeve, or a split barrel sampler. When appropriate, soil samples may be collected from drill cuttings associated with the boring or well installation. Monitor wells are constructed within select soil borings of one, two, or four-inch inside diameter PVC
casing and machine slotted screen in accordance with NCAC Title 15A, Subchapter 02C (Well Construction Standards, Criteria and Standards Applicable to Water Supply and Certain Other Wells). Clean-washed “#2 Torpedo Sand” is typically utilized to fill the boring annulus surrounding the well screen, extending to a minimum of 1-foot above the well screen. A minimum 1-foot thick bentonite clay seal is emplaced above the sand pack and hydrated. Neat cement grout is placed in the remaining annulus
space from the upper portion of the bentonite seal to within 1-foot of surface grade. In coastal plain areas where shallow groundwater is encountered, a variance to construction standards may be employed to ensure the upper portion of the well screen intersects the upper aquifer surface. Wellheads may be completed with either concrete-set flush mounted traffic-bearing steel skirted manholes with bolt down covers or steel above-ground “stick-up” well protectors set in a concrete pad. The monitoring wells are
secured with locking caps. Temporary wells or piezometers may be completed with the PVC riser cut at or above grade, and are abandoned within 24-hours of their installation. Wells may be developed using a bailer, electric submersible pump, pneumatic pump, or peristaltic pump, dependent upon site conditions. When wells are developed by the driller, they may be developed with
any of the methods outlined above, in addition to air or water injection. Soil boring logs and well construction details are typically prepared for presentation in a report appendix. Borings completed in bedrock may be drilled using air rotary, coring, or sonic drilling methods. Groundwater Depth to Water Measurements
Groundwater level measurements are typically obtained using an electronic water level indicator which registers a tone and/or illuminated light when the probe contacts groundwater. Depth to groundwater measurements are obtained by lowering the probe attached to a cable usually marked in 0.01 foot intervals into the well until the probe of the meter intersects the water surface. The measurement from
the top of the riser pipe or top of casing (TOC) to the water level is recorded to the nearest 0.01 foot. The
electronic water level indicator probe and exposed probe cable is decontaminated between measurement locations.
Generalized Standard Operating Procedures (Not All Inclusive)
WithersRavenel
Our People. Your Success.
Free Product Level Measurements Light Non-Aqueous Phase Liquid (LNAPL) or “free product” present on the water table is measured using
an electronic oil/water interface probe. The interface probe has both an audible and illuminating light
that indicate when a liquid level is encountered. The oil/water interface probe registers a solid tone and solidly lit light when LNAPL petroleum product is encountered and a beeping tone flashing light when groundwater is encountered. Depth to LNAPL measurements are obtained by lowering the probe attached to a cable marked in 0.01 foot intervals into the well until the probe of the meter intersects the product or groundwater. The measurements from the top of the riser pipe or TOC to the liquid level are
recorded to the nearest 0.01 foot. The thickness of LNAPL is calculated by subtracting the depth to LNAPL measurement from the depth to groundwater measurement. The electronic interface probe is decontaminated between measurement locations. Soil Sampling and Field Screening
Soil sampling is performed in general accordance with ASTM: 1586-84 where applicable. Sampling procedures are followed to protect the chemical integrity of the soil samples and minimize the potential for cross contamination between sample locations, including discarding of the exterior of the sample which contacts the auger bucket, acetate sleeve, or split barrel sampler, the use of stainless steel sampling
equipment, and the thorough decontamination of sampling apparatus prior to use and between sample locations. Soil samples retained as a part of excavation or other intrusive “digging” activities may be collected from the bucket of excavation equipment or using a hand shovel, if appropriate. Care to collect soil samples
from excavation equipment includes retrieving native soil from material that has not made contact with the excavating equipment. Samples are collected in sealable bags or by directly filling sample containers as described above. Sampling is performed using new, disposable nitrile gloves for each sample location to ensure sample
integrity and minimize the potential for cross contamination or field personnel exposure to contaminants.
Sampling equipment such as hand auger extensions and buckets, direct push samplers, split spoons or shovels, are decontaminated prior to their use in the collection of samples. Samples are placed within laboratory grade sample containers provided by the laboratory to which the
samples are submitted, labeled, sealed, and placed in an ice filled cooler. An aliquot of the sample is
typically placed in a clean sealable bag and allowed to reach ambient air temperature for future screening of volatile vapor content with a photoionization detector (PID), flame-ionization detector (FID) or other portable screening device.
Screening of samples with a PID, FID or other field screening device is performed in accordance with
device manufacturer specifications for screening, following calibration of the instrument based on manufacturer recommended procedures.
Generalized Standard Operating Procedures (Not All Inclusive)
WithersRavenel
Our People. Your Success.
Groundwater Sampling Groundwater samples are generally collected using one of three standard methods – through the use of a
dedicated, disposable bailer, a peristaltic pump or submersible electric pump.
When sampling with a bailer, a minimum of three well volumes of groundwater are extracted from the well as a means of purging, unless the well is purged to a “dry” state prior to the removal of three volumes of water. Prior to collection of the groundwater sample with the bailer, the water level is allowed to recover to within 80% of the original level measured prior to purging.
When sampling with a peristaltic or submersible electric pump, polyethylene (PE) tubing (or equivalent) is emplaced into the screened section of the monitoring well, and the pump is used to extract water through the tubing. When using the either of these methods, general water quality measurements including but not limited to pH, temperature, dissolved oxygen (DO), oxygen reductive potential (ORP), specific
conductivity and turbidity may be used as methods for determining when an adequate purge of the well has been conducted. When water quality parameters are measured, the resulting data are included in well purge forms or field notes specific to each site and sampling point. Following the purging of three well volumes of groundwater (in the case of the bailed well) or stability of
monitored measurements (in the case of the peristaltic or submersible electric pump), the groundwater sample(s) are introduced directly into sample containers provided by the laboratory to which samples are ultimately submitted for analysis. Any samples requiring chemical preservation are contained in pre-preserved container(s) provided by the laboratory.
Sampling is performed using new, disposable nitrile gloves for each sample location to ensure sample integrity and minimize the potential for cross contamination of samples or field personnel exposure to contaminants. Water Supply Well Sampling
Sampling of water supply wells is accomplished through the collection of a representative sample from an in-line water tap or other point accessible for sampling. Where possible, the sample is collected from a point prior to any filtration or point of entry (POE) system which might be installed on a well. In some cases, samples will be collected from both pre and post-POE locations. Prior to the collection of samples
through an in-place sampling point, the tap or sampling port is cleaned with an Alconox® and deionized
water solution, rinsed with deionized water, and again with an isopropyl alcohol (IPA) rinse. In the case of active supply wells (e.g., a well with a useable well pump with an active power supply), the well pump is energized and allowed to run for a minimum of ten (10) minutes time, after which a sample is
contained in laboratory grade sample containers as described in the previous section. Water quality
parameters may be (but are not necessarily) measured in association with the well purging. Supply wells without active power supplies are not generally sampled, as the well seal cannot be compromised by individuals not certified as a well contractor. However, in the case of a well with no
power supply or pump installed, samples could be obtained through the use of a bailer, peristaltic pump or
electric submersible pump.
Generalized Standard Operating Procedures (Not All Inclusive)
WithersRavenel
Our People. Your Success.
Decontamination Procedures Decontamination procedures employed in the performance of field activities will vary dependent upon
the method(s) of sampling performed at any site, but will generally include the following:
• Remove excess soil/sludge from any sampling equipment as needed, • Wash and scrub the equipment with a phosphate-free detergent such as Alconox® or Liquinox® in a contaminant-free tap water solution. Use a brush to remove particulate matter and surface films as necessary,
• Rinse thoroughly with tap water, • Rinse thoroughly with analyte-free water (deionized water),
Rinse thoroughly with isopropyl alcohol, • Allow the equipment to air dry,
• Prevent inadvertent contamination during storage and transport (accomplished through storage of equipment in foil or plastic bags/sheeting). In the case of disposable bailers and tubing utilized for the purging and sampling of wells, these items may be decontaminated prior to their disposal. In general, no decontamination of these items is necessary
prior to their use in sampling.